Apparatus mounting arrangement



June 20, 1944.

J E. WACK APPARATUS MOUNTING ARRANGEMENT Filed Oct. 24, 1941 5 I v 5 IFIGQ 4 FIG.3

FIG. 2

INVENTOR.

JAMES E WACK TORNEY.

Patented June 20, 1944 James E. Wack, Chicago,

Corporation, Chicago Delaware 111., assignor to Teletype 111., acorporation of Application October 24,1941, Serial No. 416,307

'8 Claims.

This invention relates to vibration dampening supports for printingtelegraph machines and other similar machines.

Duringthe'normal operation of printing telegraph machines, vibrationsoccur which may a resilient support for machines 4 havingoperating-parts wherebythe normal-vibrations of the machine maybeabsorbed.

A'f-urt-her objectof the invention is to provide means-to takeup'a-bnormal shocks of the machine which-may occur -in printingtelegraph machines.- This condition arises forinstance, when the-carriage of-a machine at certain times makes a very rapid return to itsbeginning of line position and produces a torque which tends to rock themachine on-its-vibration dampening supports-due to the fact that therapid travel of the carriage "causes a sudden displacement ofweightfromoneside ofthe machine tothe other.

Another object of this invention is to-provide suitable guiding meansfor a-machine toassure that the machine'assumes its proper position onits supports.

Provision is also-made to facilitate the insertion'ofa machine into' andremoval from a cabinet of the-type in which the machine must'be slidoutthrough anopening of thecabinet as distinguished from-a machine whichmay be lifted upwardly from its 1 supports.

Incarrying out-thisinvention, a pair of resiliently mounted spaced skidsare employed for supporting printing telegraph machines and takingup-the normal vibrations of the machine. In the slide-out type ofmachine, provision is made for the easy removal of. a machine fromacabinet by bending over the forward portions .of the skid to provide asliding surface for the front depending lugs of the mac-hineso that themachine may be easily slid along the skids tothe rear, after the rear of'themachine has been firstraised to clear the reardepending lugs of themachine from locating holessituatedat the rear of the skids.

In order to take up sudden shocks of a machine, it is proposed toutilize a-buffer padplaced between the supporting shelf 4 and the skidsto take up the rocking motion of the machine.

The invention may be more fullyunderstood by reference to the drawingand to the accompanying description.

Fig. l is a perspective View featuring a pair of skids designed for theslide out type of machine;

Fig. 21s a sectional View showing the base of a machine supported on theskids with the rear door of th cabinet open;

Fig. 3 is a perspective view of the invention showing a modification ofthe-skids designed for the lift up type of machine; and

Fig. 4 is a longitudinal sectional view of the modification featured inFig. 3 showingthe base of the machine resting on a skid.

Referring to the drawing, Figs. 1 and 2 show skid supports designedtohold a machine of the type which may be slid horizontally into or outof a cabinet. The cabinet is shown at 5 and as illustrated'has its reardoor 6 in its open position. The machine I has depending lugs 8 whichact as guiding membersfor the machine.

Within the cabinet is a shelf 9 upon'opposite sides of whichare-resiliently-mounted-skids Ill. The skids are resiliently supportedby mountings indicated generally at H. These mountings-may be of thetype disclosed in Patent N0.-1,778,503 to H. O. Lord, October 14, 1-930.The mountings comprise a resilient memberlZ into which is partiallyembedded a plate I3 having at its corners apertures adapted to receivescrews l4. Each mounting is attached to the shelf bymeans of screws l4and nuts l5 as shown in the cutaway portion of Fig. 1. By means ofboltsI6 and screws H, the skids are attached to the resilient mounting inspaced relation from the shelf 9. A flange l8 isprovided at the outerside of each of the skids to act as guides for the lugs 8 of theapparatus, as the apparatus is slid along the skids.

At one end of-the skids l0 are located apertures l9 which are adapted toreceive the depending lugs -8 of the machine I. At-the opposite end ofthe skids, a bent over portion 20 is provided, the bent over 'portionextending into apertures 2! of theshelffi.

For the purpose of describing the method by which the machine mayberemoved from the cabinet with facility, it will be presumed that themachine is set upon the skids-as shown in Fig. It will be-noted thatrearlugs*3 of the machine are restingin apertures 'l9 while the front lugs 8are postioned a shortdistance from the bent over portions-20 oftheskids. It is'to be further observed that the base cfthe machine directlycontacts the entire length of the skids, with lugs 8 serving to locatethe machine in its proper position on the skids. In order to removethecabinet through the open doorway, door 6 is first opened as shown. Therear end of the machine is raised until lugs 8 clear the apertures Hi.The machine is then slid rearwardly. At this time the front lugs 8 willride up the inclined portions 20 of the skids and the machine is theneasily slid the remaining distance out of the cabinet. Bent overportions 20 are projected into apertures 2| in order to insure that lugs8 do not catch onto the end of the bent over portion 20 and damage theskid.

To insert the machine into the cabinet, it is necessary only to lift themachine onto the skids ID with front lugs 8 positioned in front of the.

apertures I9 and to then slide the machine; forwardly until rear lugs 8drop into apertures In Figs. 3 and 4 is illustrated a type of skid whichis designed for the lift up type of printing machine. The skids 3|! aresupported on resilient mountings 3| as before described except that inthis instance the mountings are attached to shelf 32 by means of spacers33 and bolts 34, in order that a bufi'erpad 35 may rest flat on theshelf 32 without any obstructions, which condition would not exist ifthe mountings employed in Figs 1 and 2 were used, as in the latter typeof mounting, resilient member |2 protrudes above the surface of shelf 9.V

The skids 30 are provided with notches 36 into which project the lugs 31of the machine 38 when the machine is placed upon the skids. The base ofthe machine directly contacts the skids with the lugs 31 serving tolocate the machine in its position on the skids; that is, with the lugsresting in the notches 36 of the skids. Notches 39 are provided on theskids to receive electrical receptacles but this forms no part of theinvention.

A further feature of the embodiment of the invention, shown in Figs. 3and 4 of the drawing, is the provision of the buffer pad 35 which isrelatively thick and made of felt material, the purposeof which will nowbe explained. As previously mentioned in the specification, abnormalshocks occur during the operation of some types of printing machines.This condition arises when the carriage of a machine at certainintervals in the operation of the machine makes a very rapid return fromright to left and produces a torque which tends to rock the machine uponthe resilient skid supports.

In order to take up thesesudden shocks, the

2,351,725 V. the left skid is first depressed and ordinarily the bufferpad 35 is placed upon the shelf 32 to underlie the skids as shown in thedrawing and a clearance 4|] is provided betweenthe skids 30 and thebuifer pad 35. During normal operation of the machine, the vibrationsare taken up by the resiliently mounted skids 30. However, should thecarriage of the machine make a quick return, the machine tends to rockas explained and the weight of the machine is then taken up by thebuffer pad as one or the other of the resiliently mounted skids 30 isdepressed and abuts against the buifer pad due to the torque set up bythe rapid return of the machine carriage. Inasmuch as the machine tendsto rock in a counterclockwise direction as viewed from the front of themachine, the skid at the left will be depressed first and the firstrocking movement of the machine will be taken up at the left side of isits scope to be limited thereby.

The use of the buffer pad enables vibration.

the buffer pad. The machine will then rebound 7 machine does not retainenough momentum to depress the right skid.

Provision is also made in this embodiment of the invention, shown inFigs. 3 and 4 of the drawing, for the absorption of vibrations ofvarious amplitude ranges in the arrangement of the parts therein shown.Between the buffer pad 35 and the resiliently mounted skids 30 is aclearance space 43 which, in addition to those previously described, isprovided for the purpose of permitting vibrations of one amplitude to beabsorbed by the resilient mountings 3| and vibrations of a greateramplitude to be absorbed by the. buffer pad 35, coacting with themountings 3|. This arrangement of the various described parts permitsthe utilization of material within the members 3| of such resiliencythat vibrations of small amplitude can be absorbed thereby andvibrations of greater amplitude by the buffer pad 35. The clearancespace 50 provides the diiferential range of amplitude, and vibrations ofsuch magnitude as cause the apparatus to oscillate vertically within thespace clearance 43 are essentially absorbed in the resilient mountings3|, no part thereof being conveyed to the buffer pad 35. When vibrationsof an amplitude greater than that fixed and predetermined by the spaceinterval 43 occur, they are transmitted by the ,iresilient members 3'3to the buffer pad 35 and approach their maximum amplitude capacity ofabsorption. 7

Selection of the range of vibration amplitudes,

as provided for in this embodiment of the invention, is effected in oneof two ways or in a combination of both. The clearance space 40 may beincreased or decreased. If the space 40 is Eincreased, the range ofamplitude of the vibration absorbed by the resilient mountings 3| isincreased. The converse is true if the space 40 is decreased. The spacediiferencesin turn, determine the amplitude ranges beyond which theabsorption qualities of the felt pad 35. become efiective. The othercondition may be provided through the selection of the resilientmaterials used in the mountings 3| and the vibration absorbing member35. In this particular application of the invention, rubber is employedin the mountings 3| and felt in the member 35; It is not to be inferred,however, that the invention is restricted to the use of these materialsonly, nor

mountings to be employed whichv are sensitive. enough to take up theordinary vibrations ofthe machine and at, the same time providesmeans-to qabsorb sudden shocks which occur at intervals in the operationof the machine, as explained;

In order to protect. the operatorfrom possible 4| to overlie theresilient mountings wherever ,there is a possibility that an operatormay be injured. Such a guard is shown at the front of the machine, inFig. 4.,

,The invention thus provides a highly eflicient vibrationdampeningsupport for printingtele {digraph and other machines of thistype;

What is claimed is:

1. In combination, apparatus to be supported having depending elements,a base for said apparatus, a vibration dampening support for saidapparatus comprising a supporting member, spaced members resilientlymounted on said supporting member for directly supporting said base ofsaid apparatus in line contact substantially the entire length of saidspaced members and provided with means to receive the depending elementsof said apparatus and locate said apparatus on said spaced members.

2. In combination, apparatus to be supported, a vibration dampeningsupport for said apparatus, including a supporting member, spaced skidsresiliently mounted on said supporting member for supporting saidapparatus, to absorb the normal vibrations of said apparatus, and abuffer member provided intermediate said skids and said supportingmember adaptable to withstand a rocking motion of the apparatus.

3. In combination, apparatus to be supported having depending elements,spaced members for directly supporting said apparatus, a supportingmember for supporting said spaced members, one end of each of saidspaced members being bent downwardly to provide an elevating cam surfacecoactable with said depending elements to facilitate the removal of saidapparatus therefrom.

4. In combination, apparatus to be supported having depending elements,a base for said apparatus, a vibration dampening support for saidapparatus including a supporting member, resilient mountings connectedto said supporting member which provides the sole resilience for saidvibration dampening support, nonresilient spaced members carried by saidresilient mountings, said members directly supporting said base of saidapparatus in line contact substantially the entire length of said spacedmembers and provided with means to receive the depending elements ofsaid apparatus and locate said apparatus on said spaced members.

5. In combination, apparatus to be supported having depending elements,a base for said apparatus, a vibration dampening support for saidapparatus including a supporting member, spaced skids resilientlymounted on said supporting member for'directly supporting said base ofsaid apparatus, locating means for the depending elements of theapparatus positioned at one end of said spaced members, the other end ofsaid spaced members being downwardly bent to facilitate the removal ofsaid apparatus from said spaced members.

6. In combination, apparatus to be supported having front and reardepending elements, a base for said apparatus, spaced members fordirectly supporting said base of said apparatus, a supporting member forsupporting said spaced members, one end of said spaced members beingprovided with locating means for said depending elements at the rear ofsaid apparatus, the other end of said spaced members being provided withdownwardly bent portions above which said front depending members ofsaid apparatus are adapted to rest to facilitate the removal of saidapparatus from said spaced members.

7. In combination, apparatus to be supported, a supporting member,spaced skids for directly supporting said apparatus, resilient mountingsconnecting said skids with said supporting member, and C-shaped guardsto overlie said mountings to enclose the lower portions of saidmountmgs.

8. In combination, apparatus to be supported having front and reardepending elements, a base for said apparatus, spaced skids for directlysupporting said base of said apparatus, a supporting member forsupporting said skids, guiding members at the outer sides of said skidsto guide the depending elements of the apparatus, one end of said skidsbeing inclined downwardly to facilitate the removal of said apparatusfrom said skids, and the other end of said skids being provided withnotches to receive the rear depending elements of the skids, the frontdepending elements of the skids being adapted to overlie the downwardlyinclined portion of the skids.

JAMES E. WACK.

